Journal of Magnesium and Alloys最新文献

{"title":"Dynamic mechanical response and deformation-induced co-axial nanocrystalline grains facilitating crack formation in magnesium-yttrium alloy","authors":"Shuang Yang, Fei Liu, Fei Chen, Yuan-Biao Tan, Hao Fu, Si-Yuan Wei, Song Xiang","doi":"10.1016/j.jma.2024.09.011","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.011","url":null,"abstract":"The dynamic mechanical response and deformation mechanism of magnesium-yttrium alloy at high strain rate were investigated using split-Hopkinson pressure bar (SHPB) impact, and the microstructure evolution and crack formation mechanism were revealed. The yield strength and work hardening rate increase significantly with increasing impact strain rate. Deformation twinning and non-basal dislocation slip are the primary deformation mechanisms during testing. Contrary to crack initiation mechanism facilitated by adiabatic shear bands, we find that high-density co-axial nanocrystalline grains form near cracks, which leads to local softening and promotes crack initiation and rapid propagation. Most grains have similar <span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><mo is=\"true\">〈</mo><mrow is=\"true\"><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover><mn is=\"true\">2</mn><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover><mn is=\"true\">0</mn></mrow><mo is=\"true\">〉</mo></mrow></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.779ex\" role=\"img\" style=\"vertical-align: -0.812ex;\" viewbox=\"0 -846.5 2921 1196.3\" width=\"6.784ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"><use is=\"true\" xlink:href=\"#MJMAIN-27E8\"></use><g is=\"true\" transform=\"translate(389,0)\"><g is=\"true\"><g is=\"true\" transform=\"translate(35,0)\"><use xlink:href=\"#MJMAIN-31\"></use></g><g is=\"true\" transform=\"translate(0,198)\"><use x=\"-70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use><use x=\"70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use></g></g><g is=\"true\" transform=\"translate(570,0)\"><use xlink:href=\"#MJMAIN-32\"></use></g><g is=\"true\" transform=\"translate(1071,0)\"><g is=\"true\" transform=\"translate(35,0)\"><use xlink:href=\"#MJMAIN-31\"></use></g><g is=\"true\" transform=\"translate(0,198)\"><use x=\"-70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use><use x=\"70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use></g></g><g is=\"true\" transform=\"translate(1641,0)\"><use xlink:href=\"#MJMAIN-30\"></use></g></g><use is=\"true\" x=\"2531\" xlink:href=\"#MJMAIN-27E9\" y=\"0\"></use></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow is=\"true\"><mo is=\"true\">〈</mo><mrow is=\"true\"><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover><mn is=\"true\">2</mn><mover accent=\"true\" is=\"true\"><mn is=\"true\">1</mn><mo is=\"true\">¯</mo></mover><mn is=\"true\">0</mn></mrow><mo is=\"true\">〉</mo></mrow></math></span></span><script type=\"math/mml\"><math><mrow is=\"true\"><mo is=\"true\">〈</mo><mr","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure, mechanical properties and damping behavior of novel Mg-Ga-Zn alloys fabricated by medium-high strain rate rolling","authors":"Wensen Huang, Jihua Chen, Hongge Yan, Weijun Xia, Fei Zhao","doi":"10.1016/j.jma.2024.09.009","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.009","url":null,"abstract":"This study examines the grain characteristics, dynamic precipitation phase characteristics, and texture evolution of Mg-Ga-xZn alloys produced through medium-high strain rate rolling. It investigates the impact of Zn on the mechanical and damping properties of Mg-Ga sheet. The addition of Zn reduces the solid solubility of Ga in α-Mg, facilitating dynamic precipitation, grain refinement, and weakening of the basal texture of the sheet, ultimately enhancing strength and damping performance. The yield strength of the sheet initially increases and then decreases with increasing Zn content. The Mg-5Ga-0.6 Zn alloy demonstrates the best overall mechanical properties, with a yield strength, tensile strength, and elongation of 221 MPa, 304 MPa, and 28.6%, respectively, primarily attributed to fine-grained strengthening. Damping performance at low strain amplitudes also follows a similar trend with increasing Zn content, with Mg-5Ga-0.6 Zn showing the highest damping values. The study suggests that the decrease in damping performance due to Zn can be linked to the reduced solid solubility of Ga in α-Mg. Specifically, at a strain amplitude of 1 × 10^–3, the damping values <em>Q^-1</em> of Mg-5Ga, Mg-5Ga-0.6 Zn, and Mg-5Ga-1.2 Zn alloy sheets are 0.0167, 0.0152, and 0.0174, respectively. These findings have implications for the development of bio-implantable magnesium alloys with high damping properties.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gadolinium-doped injectable magnesium-calcium phosphate bone cements for noninvasive visualization","authors":"Polina A. Krokhicheva, Margarita A. Goldberg, Alexander S. Fomin, Dinara R. Khayrutdinova, Olga S. Antonova, Margarita A. Sadovnikova, Ivan V. Mikheev, Aleksander V. Leonov, Ekaterina M. Merzlyak, Daria A. Kovalishina, Suraya A. Akhmedova, Natalia S. Sergeeva, Marat R. Gafurov, Sergey M. Barinov, Vladimir S. Komlev","doi":"10.1016/j.jma.2024.09.002","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.002","url":null,"abstract":"Injectable bone cements are used in minimally invasive surgical techniques including vertebroplasty and kyphoplasty. This work is devoted to the development of magnesium-calcium phosphate cements (MCPCs) doped with gadolinium ions (Gd³⁺) for bone defect repair. Interaction between cement powders and a cement liquid resulted in the formation of newberyite and brushite phases, which gave mechanical strength up to 17 MPa without a thermal effect. The introduction of Gd³⁺ into the lattice was confirmed by electron paramagnetic resonance spectroscopy; the doping increased injectivity while giving rise to antibacterial properties against <em>Escherichia coli</em>. Assays of the cement samples soaking in Kokubo's simulated body fluid revealed the formation of calcium phosphate coatings on the cements’ surface. The cements manifested biocompatibility with the MG-63 cell line and significantly enhanced contrast when Gd-MCPC was placed into a bone defect and examined by X-ray micro–computed tomography. For the first time, visualization of a Gd-doped cement material was achieved in a model of a bone defect analyzed by MRI.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid solution dependence of the deformation behavior in Mg–xZn (x = 0, 1, 2 wt%) alloys: In-situ neutron diffraction and crystal plasticity modeling","authors":"Huai Wang, Soo Yeol Lee, You Sub Kim, Huamiao Wang, Wanchuck Woo, Ke An","doi":"10.1016/j.jma.2024.09.006","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.006","url":null,"abstract":"The effects of solid solution on the deformation behavior of binary Mg–<em>x</em>Zn (<em>x</em> = 0, 1, 2 wt%) alloys featuring a designated texture that enables extension twinning under tension parallel to the basal pole in most grains, were investigated using in-situ neutron diffraction and the EVPSC-TDT model. Neutron diffraction was used to quantitatively track grain-level lattice strains and diffraction intensity changes (related to mechanical twinning) in differently oriented grains of each alloy during cyclic tensile/compressive loadings. These measurements were accurately captured by the model. The stress-strain curves of Mg-1 wt%Zn and Mg-2 wt%Zn alloys show as-expected solid solution strengthening from the addition of Zn compared to pure Mg. The macroscopic yielding and hardening behaviors are explained by alternating slip and twinning modes as calculated by the model. The solid solution's influence on individual deformation modes, including basal 〈a〉 slip, prismatic 〈a〉 slip, and extension twinning, was then quantitatively assessed in terms of activity, yielding behavior, and hardening response by combining neutron diffraction results with crystal plasticity predictions. The Mg-1 wt%Zn alloy displays distinct yielding and hardening behavior due to solid solution softening of prismatic 〈a〉 slip. Additionally, the dependence of extension twinning, in terms of the twinning volume fraction, on Zn content exhibits opposite trends under tensile and compressive loadings.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142377491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of in-situ porous Ti particle reinforced Mg-Cu-Gd metallic glass matrix composite with dual-scale reinforcing structures","authors":"Yuman Shao, Dijia Zhao, Wei Guo, Shulin Lü, Jincheng Wang, Shusen Wu","doi":"10.1016/j.jma.2024.09.003","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.003","url":null,"abstract":"In the present work, the porous Ti particle reinforced Mg-based bulk metallic glass matrix composites (BMGCs) have been successfully fabricated via a novel <em>in-situ</em> dealloying method in metallic melt. A dual reinforcing structure, including large-scale between porous particles and fine-scale inside one particle, was induced to further overcome the strength-plasticity tradeoff. The microstructure and mechanical properties of such dual-scale structure-reinforced BMGCs with various volume fractions and diameters of porous Ti particles were investigated in detail. It is found that with more and finer porous Ti particles, the BMGC showed both high fracture strength (1131.9 ± 39.1 MPa) and good plastic deformability (1.48 ± 0.38 %). The characteristic of the reinforcing structure (0.48 µm) inside the porous particles was close to the plastic processing zone size of the matrix (0.1∼0.2 µm), which generated a locally ideal reinforcing structure. Such dual-scale reinforcing structures with more interfaces can effectively promote the multiplication of shear bands at the interfaces. Due to the size effect, the refined submicron matrix between the Ti ligaments inside the porous particles should exhibit homogeneous shearing events. Such delocalization behavior from the dual-scale reinforcing structures should help to enhance the role of the interactions between shear bands, thus improving the yield strength of the composites. Based on the <em>in-situ</em> dealloying method, the dual-scale structure design provides a novel approach to fabricate various BMGCs with both high strength and good plasticity.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of pre-deformation on precipitation behavior of AZ80 alloy: Comparison of slip- and twinning-dominant deformation","authors":"Hyun Ji Kim, Sang Cheol Jin, Sumi Jo, Sung Hyuk Park","doi":"10.1016/j.jma.2024.09.001","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.001","url":null,"abstract":"This study investigates the effect of the deformation mode on the precipitation behavior of an extruded Mg–8.0Al–0.5Zn–0.2Mn (AZ80) alloy. The alloy samples are compared after the application of 3.5 % tension and 3.5 % compression along the extrusion direction to induce slip-dominant and twinning-dominant deformation modes, respectively. The pre-compressed (PC) sample, which contained numerous {10–12} tension twins, has a reduced grain size and a higher internal strain than the pre-tensioned (PT) sample, which is attributed to the inherent internal strain that occurs during the formation and growth of the twins. As a result, the precipitation behavior of the PC sample is accelerated, leading to its short peak aging time of 32 h, which is lower than those of the PT and as-extruded samples (48 and 100 h, respectively). Furthermore, fine continuous precipitates (CPs) rapidly form within the {10–12} twins, contributing to the enhanced hardness. Discontinuous precipitates (DPs), which have a hardness comparable to the CP-containing twinned regions, in the PC sample experience less coarsening during aging than those in the PT sample due to growth inhibition by the {10–12} twins. Ultimately, the {10–12} twins generated under the twinning-dominant deformation condition lead to enhanced precipitation behaviors, including the preferential formation and refinement of CPs and the suppressed coarsening of DPs. Consequently, pre-deformation that occurs {10–12} twinning exhibits more pronounced effects on precipitation acceleration and microstructural modification than slip-inducing pre-deformation.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of hard-plate rolling and annealing treatment on the microstructure and mechanical properties of NbB2 particle-reinforced AZ91 composite","authors":"Wenxue Fan, Yu Bai, Tianxin Li, Hai Hao, Xingguo Zhang","doi":"10.1016/j.jma.2024.09.005","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.005","url":null,"abstract":"In this study, a NbB₂/AZ91 composite exhibiting desirable mechanical properties was fabricated using a sample casting technique, followed by hard-plate rolling and short-term annealing. The effect of NbB₂ particles on the microstructural evolution of the AZ91 alloy was investigated. The presence of NbB₂ was shown to have a grain-refining effect on the AZ91 alloy and promoted dynamic recrystallization (DRX) and precipitation of fine Mg₁₇Al₁₂ phases via particle-stimulated nucleation (PSN). Tensile testing revealed substantial enhancements in the ultimate tensile strength (UTS), yield strength (YS), and elongation (EL) of the as-rolled AZ91 alloy, with values of 379 MPa, 292 MPa, and 14.7 %, respectively, owing to the incorporation of NbB₂ particles. Annealing led to further enhancements in EL with slight reductions in UTS and YS (360 MPa, 252 MPa, and 16.8 %, respectively). Owing to grain refinement and the PSN effect of the NbB₂ particles, a significant number of geometrically necessary dislocations (GNDs) were induced in the matrix during the rolling process, which reduces the nucleation barrier and increases the number of nucleation sites for the recrystallized grains and Mg₁₇Al₁₂ precipitates. Meanwhile, many residual dislocations and fine Mg₁₇Al₁₂ precipitates in the as-rolled alloys were annihilated during annealing, resulting in slight grain growth and coarsening. The strengthening mechanism of the NbB₂/AZ91 composite are mainly associated with grain-refinement strengthening, particle-induced dislocation strengthening, strengthening resulting from mismatching coefficients of thermal expansion (CTE), and hetero-deformation-induced (HDI) strengthening. Textural weakening, increased activation of non-basal slip systems, more-uniform strain patterns resulting from NbB₂ particles, and precipitation are mainly responsible for enhancing ductility.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural engineering of potassium vanadate cathode by pre-intercalated Mg2+ for high-performance and durable rechargeable aqueous zinc-ion batteries","authors":"Ashok Kumar Kakarla, Hari Bandi, Wasim Akram Syed, R. Shanthappa, Jae Su Yu","doi":"10.1016/j.jma.2024.08.018","DOIUrl":"https://doi.org/10.1016/j.jma.2024.08.018","url":null,"abstract":"Aqueous zinc (Zn)-ion batteries (AZIBs) have the potential to be used in massive energy storage owing to their low cost, eco-friendliness, safety, and good energy density. Significant research has been focused on enhancing the performance of AZIBs, but challenges persist. Vanadium-based oxides, known for their large interlayer spacing, are promising cathode materials. In this report, we synthesize Mg²⁺-intercalated potassium vanadate (KVO) (MgKVO) via a single-step hydrothermal method and achieve a 12.2 Å interlayer spacing. Mg²⁺ intercalation enhances the KVO performance, providing wide channels for Zn²⁺, which results in high capacity and ion diffusion. The combined action of K⁺ and Mg²⁺ intercalation enhances the electrical conductivity of MgKVO. This structural design endows MgKVO with excellent electrochemical performance. The AZIB with the MgKVO cathode delivers a high capacity of 457 mAh g^-1 at 0.5 A g^-1, excellent rate performance of 298 mAh g^-1 at 5 A g^-1, and outstanding cycling stability of 102% over 1300 cycles at 3 A g^-1. Additionally, pseudocapacitance analysis reveals the high capacitance contribution and Zn²⁺ diffusion coefficient of MgKVO. Notably, ex-situ X-ray diffraction, X-ray photoelectron spectroscopy, and Raman analyses further demonstrate the Zn²⁺ insertion/extraction and Zn-ion storage mechanisms that occurred during cycling in the battery system. This study provides new insights into the intercalation of dual cations in vanadium oxides and offers new solutions for designing cathodes for high-capacity AZIBs.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of organic-inorganic 3D-nanocontainers for smart corrosion protection of friction stir welded AZ31B magnesium alloy-titanium dissimilar joints","authors":"Sepideh Aliasghari, Teruo Hashimoto, Peter Kelly, Allan Matthews","doi":"10.1016/j.jma.2024.09.004","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.004","url":null,"abstract":"The joining of different light metals through friction stir welding (FSW) is gaining interest as a method to decrease weight and improve fuel efficiency. However, to ensure durability, these welded metals may require surface treatments to protect against corrosion or wear. This study presents a novel approach for the simultaneous delivery of two distinct corrosion inhibitors to Ti-Mg dissimilar PEO treated joints on demand. The research focuses on the synthesis, characterization, and application of cerium@polystyrene (Ce@PS) nanocontainers, which are loaded with 8-hydroxyquinoline (8-HQ) to enhance corrosion protection. The synthesis involves several key steps, including the formation of a cerium-based outer layer around polystyrene nanospheres, the selective removal of the polystyrene core to create a porous structure, and the subsequent loading of the 8-HQ inhibitor. Structural and compositional analyses, conducted using scanning transmission electron microscopy (STEM) and energy-dispersive X-ray spectroscopy (EDS), confirmed the successful incorporation of 8-HQ within the nanocontainers. Additionally, Fourier-transform infrared spectroscopy (FTIR) provided detailed information about the chemical composition of the organic materials throughout the synthesis process. Thermal decomposition analysis verified the successful fabrication and stability of the dual-shell nanocontainers.Corrosion tests on Ti-Mg joints treated with plasma electrolytic oxidation (PEO) coatings and loaded nanocontainers demonstrated significantly improved corrosion resistance compared to untreated joints. This research highlights the potential of dual-shell nanocontainers, containing both organic and inorganic inhibitors, to offer prolonged corrosion protection, particularly against galvanic corrosion in dissimilar joints. The findings suggest that these synthesized nanocontainers hold promise for various industrial applications, particularly in the context of friction stir welded (FSW) Ti-Mg dissimilar joints, providing valuable insights for the development of advanced materials designed to mitigate corrosion.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the photocatalytic performance and chemical durability of AZ31 magnesium alloy by incorporating two types of nanoparticles through plasma electrolytic oxidation","authors":"Mosab Kaseem, Abdullah H. Alluhayb, Talitha Tara Thanaa, Arash Fattah-alhosseini, Mohammad Alkaseem","doi":"10.1016/j.jma.2024.07.025","DOIUrl":"https://doi.org/10.1016/j.jma.2024.07.025","url":null,"abstract":"The difficulty in achieving a balance between photocatalytic efficiency and chemical robustness has been a barrier to the broad use of MgO as a versatile material, mainly because of its restricted surface activity. To overcome this, a novel surface modification technique is proposed. It involves the integration of highly stable SnO and WO nanoparticles, which are known to enhance surface activity. This approach aims to achieve an optimal balance between efficiency and stability by finely tuning the structure-surface reactivity relationship. The technique utilizes a plasma electrolytic oxidation (PEO) method. In this method, both the AZ31 Mg alloy substrate and SnO/WO precursors undergo simultaneous oxidation. This is induced by high-energy plasma generated through high voltage. The results demonstrate that this process yields a MgO layer with a homogeneous dispersion of SnO and WO nanoparticles, significantly enhancing its overall performance. Corrosion measurements demonstrated enhanced electrochemical stability against chloride ions. The dual incorporation resulted in a hybrid film exhibiting a corrosion current density value of 7.57 × 10 A/cm and a high outer layer resistance of 5.17 × 10 Ω.cm. Additionally, the dual incorporation of SnO and WO nanoparticles enhances the photocatalytic activity of AZ31 Mg towards tetracycline degradation. This results in a photocatalytic efficiency of 89.54 % within 2 h of exposure to visible light using the BA-W-Sn sample, which outperforms other samples. This integrated strategy enables the study to contribute significantly to expanding the practical applications of MgO-based materials. It does so by simultaneously enhancing their photocatalytic activity and chemical stability.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":17.6,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}